2 piece Crank Set Forged from 6061 alloy and heat treated for extra strength. A very affordable set of 2 piece cranks. Uses a external Euro sealed BB set which is supplied. Specifications Number of Chainrings: No Rings Included Bore: 24 Crank Arm Material: Aluminum Drive Side Compatibility: Right Hand Drive Chainring BCD: 110 Chainrings Included: No Crank Length (mm): 165 Spindle Material: Steel Crankset Style: 2-Piece BB Style: Euro BB/Frame Interface: English Weight: 721g BB Included: Yes